
THREE-PHASE OIL-IMMERSED DISTRIBUTION TRANSFORMERS 50 HZ, 50 UP TO 2500 KVA - PART 1: GENERAL REQUIREMENTS AND REQUIREMENTS FOR TRANSFORMERS U(INDEX)M UP TO 24 KV
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
HD 428.1 : 1992 COR 2011 - Identical
HD 428.1 : 1992 COR 2011 - Identical